move log overrides into std_options (#902)

src/main.zig

@@ -11,16 +11,17 @@ const debug = @import("debug.zig");
 
 const logger = std.log.scoped(.main);
 
-// Always set this to debug to make std.log call into our handler, then control the runtime
-// value in the definition below.
-pub const log_level = .debug;
-
 var actual_log_level: std.log.Level = switch (zig_builtin.mode) {
     .Debug => .debug,
     else => @intToEnum(std.log.Level, @enumToInt(build_options.log_level)), // temporary fix to build failing on release-safe due to a Zig bug
 };
 
-pub fn log(
+pub const std_options = struct {
+    // Always set this to debug to make std.log call into our handler, then control the runtime
+    // value in the definition below.
+    pub const log_level = .debug;
+
+    pub fn logFn(
         comptime level: std.log.Level,
         comptime scope: @TypeOf(.EnumLiteral),
         comptime format: []const u8,
@@ -33,6 +34,7 @@ pub fn log(
         std.debug.print("{s:<5}: ({s:^6}): ", .{ level_txt, @tagName(scope) });
         std.debug.print(format ++ "\n", args);
     }
+};
 
 fn loop(
     server: *Server,